To reach the German targets to reduce CO2-emissions by 80 to 95% in relation to 1990 by 2050 an increase of installed capacity of renewable energy technologies, storages as well as technologies for power-to-X applications is well accepted in research in the field of energy system analysis. However current studies all result in different system compositions, which are due to many reasons. This meta-analysis assesses the bandwidth of technologies in the year 2050, needed for the above mentioned CO2-emission reduction, and compares the values to an extrapolation of current trend of the technologies. It is the goal to identify technology aspects, which need to be adapted to reach the goals as well as show trends in technologies, which are in line with the CO2-emission reduction targets.